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8. CIRCUIT DIAGRAM
1
1
2
2
A
A
Remote Power On
B
B
R408
RPWRON_EN
3.3M
RPWRON
C
C
END_KEY_IN
D
D
E
E
Add for Charging Trouble
CHG_PPR
CHG_EOC
CHG_EN
F
F
G
G
H
H
1
1
2
2
LGE Internal Use Only
3
3
4
4
5
5
VRTC_2V0
PWRON
3
Q401
1
2SC5663
2
R410
3
R411
1
Q402
C405
3.3M
END_KEY
2SC5663
2.2u
10K
2
3
Q403
1
2SC5663
2
VIO_2V62
CHARGING IC
VBUS_USB
VCHG
R417
R416
100K
100K
VBAT
U401
ISL9221
13
PGND
1
VDC
12
VDC_BYP
OVP_VCHG
2
VUSB
11
BAT
3
_PPR
10
USB_BYP
OVP_VUSB
4
_CHG
9
IVDC
5
_EN
8
GND
6
IMIN
7
IUSB
R420
C413
C414
5.1K
1u
1u
R421
R419
C415
33K
15K
1u
3
3
4
4
5
5
6
6
7
7
8
8
SIM & MMC Connetor (ENSY0017901)
VMMC
END_KEY_IN
KP_IN(6)
MMC_D(2)
MMC_D(3)
MMC_CMD
MMC_CLK
KP_OUT(0)
MMC_D(0)
MMC_D(1)
R414
MMC_DETECT
47
VIO_2V62
R415
100K
C406
1000p
Battery Connector (ENZY0019401)
D2
3
2
1
D1
CN401
Change Connector For SMT
6
6
7
7
8
8
- 114 -
9
9
10
10
11
11
VSIM_2V8
SIM_RST
SIM_CLK
SIM_IO
C401
C402
C403
C404
DNI
1u
27p
DNI
1
1
2
2
3
3
4
16
4
GND1
S401
5
15
5
GND2
6
14
6
GND3
7
13
7
GND4
8
12
8
GND5
11
GND6
9
SWB
10
SWA
C407
C408
1uF
DNI
VBAT
BAT_ID
R418
1K
100p
C410
C411
C412
2.2u
C409
27p
47p
9
9
10
10
11
11
LGMC
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
12
12
C
C
D
D
E
E
F
F
G
G
H
H
12
12
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Troubleshooting
